Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 174
astic checkvalve in the branch tube or vacuum connection.It will produce a vacuum equal to the baromet-ric height, less the height due to the tension ofthe vapor of water. 610. HYDRAULIC LIFT for a craneor elevator. Section showing cylinderplunger and sheaves. 611. Plan, showing position of… … 61 la. HYDRAULIC SPRINKLER HEAD.—The levers of the toggle joint areheld in place by a strip of fusible alloy thatmelts at about 212 deg. and allows the leversto fly open and release the water sprayvalve. Pressure on the valve is adjusted bythe screw and nut at the top.
Mechanical movements
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